The many times we have travelled to Dalaman. I can think of a few times when hand luggage was weighed in the U.K. It just depends on how busy the airline are with passengers. I remember them weighing our hand luggage a couple of years ago and Phil was a little bit over, they made him take out a book and put it in his pocket. As soon as we got through, he put it back in his bag.
I also remember them weight hand luggage at Dalaman and making a couple pay £16.00 per kilo excess as they had overweight hand luggage and their suitcases were just on the limit, so they could not transfer anything from their hand luggage into their suitcases. They had to pay for 3 kilos excess.